I needed a used dualshock 3 for my ps3 and found a local guy selling one that has bullets for buttons lol. It seems this was a popular controller mod 10 years
Sony DualShock 3 Wireless Controller for PlayStation 3 - Red | GameStop
Free STL file Aftermarket PC controller buttons (for DualShock 3, DualShock 4 - knockoff / xbox pc layout) 🎮・Template to download and 3D print・Cults
Amazon.com: PlayStation 3 Dualshock 3 Wireless Controller (Black) : Video Games
3d Analog Joystick Replacement | Dualshock 3 Button | Grips Caps Buttons | Repair Parts - Accessories - Aliexpress
PS3â„¢ | How to use this guide
The PlayStation 4 controller: What's new with the buttons and triggers (part 3, exclusive) | Page 2 of 2 | VentureBeat